| 1 | Beth | Evans | Protagonist. A marriage counselor. |
| | Richard | Murray | Beth's ex-husband. |
| | Charlie | Murray | Beth and Richard's son. |
| | Danielle | Brown | Beth's client. Aka: Sophie Loughton. |
| | Peter | Brown | Danielle's husband. |
| 5 | Nick | | Beth's ex-lover. |
| | Jessica | | Danielle and Jessica's pregnant friend. |
| | Julian | | Jessica's husband. |
| | Genevieve | Price | The head teacher of the school where Beth taught. |
| 17 | Reese | Witherspoon | An actress. |
| | Kate | Winslet | An English actress. |
| 25 | Nathan | Price | Genevieve's husband. |
| | Dave | Richard | An estate agent. |
| 29 | Grace | | Beth's supervisor. |
| 34 | Virgini | Loughton | Danielle's mother. Aka: Ginnie. |
| | Lisa | | A social services agent. |
| 51 | Antonia | | Richard's sidekick. |
